Hi there. I was only briefly looking at your site. Check your style.css in your theme's folder. Somewhere it says

a, h2 a:hover, h3 a:hover {
color: #006666;
text-decoration: none;
}

a:hover {
color: #006666;
text-decoration: underline;
}

Change the color values to "#ffffff" or "white" to get links white. If you only want your footer links/text white, you will have to add something like

#footer p, #footer p a, #footer p a:hover{color:#ffffff;}

I see you've tried to att <div style=" color:white;"> in your markup for the footer. It's better to keep the styles in your stylesheet or you will get very frustrated one day when you want to change something. I've tried it and can't recommend it.